Accelerator hall of the S- DALINAC – electron energies from 2 to 130 MeV available – cw and pulsed beam operation possible – source for polarized electron beams under construction HIPS
NEPTUN – High-resolution tagger Energy range:6 MeV ≤ E ≤ 20 MeV Energy resolution: E = MeV Energy window:≈ 3 MeV Photon intensity:≈ 10 4 keV -1 s -1 1 m Photon energy:E = E i - E e focal plane radiator magnet coincidence experiment
NEPTUN – High-resolution tagger – untagged photon spectrum – tagged photon spectrum: E = 10 MeV – simulation of detector response